Dr. Oren G. Good wants to know if eating breakfast improves IQ test scores in his 400 General Psychology students. He divides the subjects into two groups. Group 1 eats a breakfast of 8 oz orange juice, 1 cup oatmeal, and medium banana. Group 2 drinks an 8 oz glass of water. Each subject is then given an IQ test. Average scores for each group are computed and compared. What is the hypothesis in Dr. Good's experiment